TRAILER] Shelley (Anna Faris) is living a carefree life until a rival gets her tossed out of the Playboy Mansion. With nowhere to go, fate delivers her to the sorority girls from Zeta Alpha Zeta. Unless they can sign a new pledge class, the seven socially clueless women will lose their house to the scheming girls of Phi Iota Mu. Shelley takes on the task of being their housemother and helping the girls save the sorority.